Dear Ravikumar,

I got the attached file at the following link:

extras.springer.com/2000/978-3-540-64966-3/.../6s05d02.pdf

Please see table 1 of the second link.

https://hazen.carnegiescience.edu/sites/hazen.gl.ciw.edu/files/Smyth%202000.pdf

For Cr2O3 (eskolaite), and according to next reference (p. 438), α = 10.9·10-6 K-1:

http://link.springer.com/referenceworkentry/10.1007/3-540-30437-1_6